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US8484950B2 - Exhaust gas purification configuration and method for exhaust gas purification using a reactant - Google Patents

Exhaust gas purification configuration and method for exhaust gas purification using a reactant Download PDF

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Publication number
US8484950B2
US8484950B2 US13/070,650 US201113070650A US8484950B2 US 8484950 B2 US8484950 B2 US 8484950B2 US 201113070650 A US201113070650 A US 201113070650A US 8484950 B2 US8484950 B2 US 8484950B2
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Prior art keywords
end side
reactant
exhaust
exhaust line
adding unit
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US13/070,650
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US20110225952A1 (en
Inventor
Olaf Witte-Merl
Jan Hodgson
Rolf Brück
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Continental Emitec GmbH
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Emitec Gesellschaft fuer Emissionstechnologie mbH
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Assigned to CONTINENTAL EMITEC GMBH reassignment CONTINENTAL EMITEC GMBH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: EMITEC GESELLSCHAFT FÜR EMISSIONSTECHNOLGIE MBH
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/40—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a hydrolysis catalyst
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a configuration and a method for the purification of an exhaust-gas flow of an internal combustion engine, in which a reactant is sprayed onto an outflow side of an element for exhaust-gas purification.
  • elements for exhaust-gas purification are inserted into exhaust lines. Those elements at least intermittently require the supply of a reactant for correct operation.
  • the elements include, in particular, SCR catalytic converters, to which ammonia in pure or compound form, for example a urea solution, is supplied as a reducing agent for the selective reduction of nitrogen oxides.
  • SCR catalytic converters to which ammonia in pure or compound form, for example a urea solution, is supplied as a reducing agent for the selective reduction of nitrogen oxides.
  • such elements also include oxidation-catalytic exhaust-gas purification elements to which hydrocarbon compounds (fuel) are supplied as a reactant for the purpose of exhaust-gas heating. The heating of the exhaust-gas flow is provided during a thermal soot regeneration of a particle filter or for sulfur regeneration of nitrogen oxide storage catalytic converters.
  • a configuration for the purification of an exhaust-gas flow of an internal combustion engine comprises an exhaust line communicating with the internal combustion engine.
  • An exhaust-gas purification element is disposed in the exhaust line and has a first end side and a second end side.
  • the element is configured to conduct an exhaust-gas flow through the element from the first end side to the second end side.
  • An adding unit is disposed downstream of the element for adding a reactant into the exhaust-gas flow.
  • the adding unit is spaced apart from the second end side of the element by a distance of at most 30 mm, for causing at least a part of the added reactant to impinge on the second end side of the element.
  • An element for exhaust-gas purification is to be understood, in particular, to mean a catalyst carrier body which includes a catalytically active coating (in particular in a washcoat) which effects a conversion of at least one component of the reactant and/or of the exhaust gas.
  • the element may also perform the function of a particle filter or a particle trap in order to reduce the concentration of particles in the exhaust-gas flow.
  • This may be either a closed particle filter which includes a multiplicity of alternately closed-off channels or a so-called partial flow filter in which, through the use of fixtures, a part of the exhaust gas is conducted into a porous medium.
  • Both the catalyst carrier body and also the particle filter may be constructed in particular in the form of a honeycomb body in which a ceramic and/or metallic body is formed with a multiplicity of cavities through which a flow can pass.
  • a metallic honeycomb body may also have not only at least partially structured metallic foils but also layers of superfine wires (nonwoven).
  • the element has a first end side which faces counter to the exhaust-gas flow during the operation of the configuration, in such a way that the exhaust gas flows through the exhaust line and into the element through the first end side and is conducted through the element to the second end side of the element.
  • the passage of the flow through the element results in particular in a homogenization of the exhaust-gas flow over the cross section of the exhaust line.
  • the homogenization continues at least in a short region downstream of the element before the individual flows which were previously at least partially separated from one another, in particular in a honeycomb body, then merge again in the exhaust line.
  • the laminar flow region which occurs only in the direct vicinity of the second end side of the element on the outflow side of the element, permits a reproducible and adjustable distribution of the reactant being introduced.
  • the adding unit is disposed at a distance of at most 30 mm, in particular at a distance of at most 20 mm and preferably at a distance of at most 15 mm from the second end side of the element.
  • the distance is defined as the spacing of the adding unit or of the nozzle opening from the furthest remote point of the second end side of the element in the main flow direction.
  • the reactant is introduced into the exhaust line, wherein the nozzle may be adapted, in a manner specific to the present application, to the substantially constant flow conditions in such a way that desired uniform contact of the reactant with the element is obtained under the occurring operating conditions. In particular, it is also obtained in this way that no (significant) amount of the added reactant is sprayed past the second end side, and (virtually) the entire amount reaches the second end side.
  • the fraction of impinging reactant is preferably greater than 90% or even greater than 96% of the dispensed amount, in particular under all operating conditions of the configuration in a motor vehicle.
  • the second end side has a spherical shape, in particular a concavely spherical shape, in such a way that, through the use of the adding unit disposed opposite the spherical second end side, the reactant can be distributed uniformly over the surface of the second end side.
  • the spherical construction of the second end side is aligned in particular toward the configuration of the adding unit.
  • the second end side is formed so as to be inclined with respect to the exhaust line, with the inclination being disposed relative to the adding unit in such a way that a uniform distribution of the supplied reactant can be attained over the area of the second end side.
  • Such an inclination of the second end side of the element can be realized in a simple manner in production terms and is therefore preferably used.
  • the adding unit is disposed outside an exhaust line diameter, in particular in a partial region of the exhaust line which is not (directly) traversed by flow.
  • the partial region may, for example, be formed as a conical housing which is disposed on the circumferential surface of the exhaust line, with the cone opening in the direction of the exhaust line, and with the adding unit being disposed at the other end of the cone.
  • the adding unit may additionally be at least partially shielded from the exhaust-gas flow by a shield plate.
  • the adding unit outside the exhaust-gas flow, it is achieved firstly that the adding unit is not contaminated by particles present in the exhaust-gas flow and therefore also cannot become at least partially blocked, and secondly that a uniform shape of the spray cone of reactant in the partial region is made possible, and the spray cone is introduced into the laminar flow region of the exhaust-gas flow.
  • the adding unit is disposed at an angle with respect to the exhaust line, in such a way that it is made possible for the reactant to be introduced counter to the exhaust-gas flow, and for at least a part of the supplied reactant to impinge on the second end side.
  • a configuration is considered to be advantageous in which the element has, at the second end side, an absorption capacity for droplets of the reactant with a diameter of greater than 200 ⁇ m.
  • the element for exhaust-gas purification should have a corresponding absorption capacity and/or storage capacity, such as for example a suitable porosity, locally close to the second end side.
  • a corresponding absorption capacity and/or storage capacity such as for example a suitable porosity
  • a method for adding a reactant into an exhaust line during operation of an internal combustion engine comprises providing an exhaust-gas purification element with an upstream first end side, a downstream second end side and a laminar flow region, in the exhaust line, providing an adding unit in the exhaust line downstream of the element in the laminar flow region, and dispensing or adding predetermined amounts of the reactant onto the second end side of the element with the adding unit.
  • the adding unit need not be disposed within the laminar flow region of the element, which is present only in the region of the exhaust line diameter and is disposed in alignment with the second end side of the element.
  • the adding unit may also be positioned laterally offset with respect to the laminar flow region, in such a way that the spray cone of the adding unit is formed in particular in a partial region not (directly) traversed by flow, and then continues preferably exclusively in the laminar flow region of the element.
  • the reactant is sprayed onto a second end side of the element through the use of an asymmetrically shaped nozzle of the adding unit.
  • An asymmetrically shaped nozzle produces a correspondingly asymmetrical spray cone in which regions of different reactant amounts are present in a plane perpendicular to the spray direction.
  • the adding unit is disposed outside the exhaust line diameter and acts on at least 90% of an area of the second end side.
  • the adding unit is thus disposed relative to the second end side in such a way that preferably the entire area of the second end side is impinged on by the reactant.
  • the area of the second end side is defined as the (if appropriate curved) plane spanned by the end points of the structure of the element.
  • the second end surface of the element is impinged on with reactant with uniform area loading. This means in particular that every partial region of the second end side of the element disposed within the spray cone of the adding unit is impinged on with the same amount of reactant.
  • This advantageous distribution of the reactant leads to a uniform conversion of the reactant in the exhaust-gas flow, in such a way that optimum purification of the exhaust-gas flow is attained.
  • At least 90% of the added reactant makes contact with the surface of the second end side of the element.
  • the surface of the element is defined both as the area of the second end side of the element and also surfaces within the element itself.
  • the size of the droplets of the reactant added into the exhaust line is variable.
  • the nozzle of the adding unit can produce droplets of different size in particular as a function of exhaust-gas speed and reactant supply speed.
  • the size of the droplets within the spray cone may be made different, in such a way that the reactant can be deposited on the second end side of the element with the most uniform possible surface loading as a function of flow conditions of the exhaust-gas flow.
  • those droplets in the region of the spray cone of the adding unit which are directed to the further remote regions of the second end side of the element should be larger than the droplets which must cover only a short distance from the adding unit to the second end side.
  • the droplet size should be selected in particular as a function of exhaust-gas speed, angle of the adding unit and speed of the supplied reactant. It is preferable for droplets to be generated (also/only) with a diameter of greater than 200 ⁇ m [micrometers]. Such droplets can reach even remote regions of the second end side of the element at exhaust-gas speeds of approximately 20 to 25 m/s.
  • the method may also be realized independently of the above embodiment of the configuration and/or of the method. Smaller droplets may otherwise also be used.
  • the ratio of largest droplets to smallest droplets is at least 3 to 1.
  • the smallest droplets generated are supplied preferably to those regions of the second end side which are disposed at only a small spacing from the adding unit, while the largest droplets, in particular those with droplet diameters of at least 200 ⁇ m [micrometers], are supplied to the remote regions of the second end side.
  • the speed of the droplets of the reactant added into the exhaust line is variable.
  • the speed of the droplets which impinge on those regions of the second end side of the element which are remote from the adding unit should have higher droplet speeds.
  • the adaptation of the parameters droplet size and droplet speed should be coordinated with one another and if appropriate combined.
  • the ratio of highest speed to lowest speed of the droplets is at least 3 to 1.
  • the adding of the reactant is controlled through the use of an adding pressure applied to the adding unit. It is consequently possible for the pressure in the feed line of the reactant to be adapted (without the need to vary the (different) settings for the nozzle). For this purpose, it is possible for example for a pump to set a delivery pressure, for a pressure control valve to set the suitable desired adding pressure in the feed line, and for a valve to dispense the desired amount (droplets, speed) into the exhaust line.
  • the method may also be realized independently of the above embodiment of the configuration and/or of the method.
  • the configuration according to the invention and/or the method according to the invention are provided in particular for use in a motor vehicle and may if appropriate be combined with one another.
  • the configuration and the method preferably serve for the adding of liquid urea-water solution, with the element having a hydrolysis coating at least on one section of the second end side.
  • FIG. 1 is a diagrammatic, plan view of a motor vehicle having a configuration according to the invention
  • FIG. 2 is an enlarged, sectional view of a first embodiment of the configuration
  • FIG. 3 is a sectional view of the first embodiment of the configuration at a moment at which a reactant is introduced;
  • FIG. 4 is a sectional view of a second embodiment of a configuration according to the invention, having a spherical second end side;
  • FIG. 5 is a sectional view of a third embodiment of a configuration according to the invention, with an inclined second end side.
  • FIG. 1 there is seen a configuration 1 in a motor vehicle 18 having an internal combustion engine 3 and an exhaust line 4 , through which an exhaust-gas flow 2 flows.
  • an element 5 which is disposed in the exhaust line 4 , has an upstream first end side 6 and a downstream second end side 7 .
  • An adding unit 8 is also disposed downstream of the element 5 .
  • the adding unit 8 is connected through a feed line 25 to a pump 23 and to a tank 24 .
  • a pressure control valve 22 may also be connected to the feed line 25 , in such a way that a delivery pressure which is provided in the feed line 25 by the pump 23 can, if appropriate, be reduced to an adding pressure by the pressure control valve 22 .
  • a reactant is then introduced into the exhaust line 4 at the adding pressure from the feed line 25 .
  • the adding unit 8 is provided with a controlled valve, through the use of which the desired amount of reducing agent is conveyed into the exhaust line 4 at the desired time.
  • FIG. 2 shows a configuration 1 having an element 5 disposed in an exhaust line 4 .
  • An exhaust-gas flow 2 passes through a first end side 6 in the direction of a second end side 7 , of the element 5 .
  • the second end side 7 has an area 15 which corresponds substantially to the cross-sectional area of the exhaust line 4 .
  • a laminar flow region 12 which is produced downstream of the element 5 , extends up to a distance 10 from the second end side 7 of the element 5 .
  • a reproducible introduction of reactant is possible, within the laminar flow region 12 , which is always present during the operation of the configuration 1 , in such a way that uniform area loading of the surface 15 with reactant can be attained.
  • the adding unit 8 for the reactant is disposed at only the short distance 10 from the second end side 7 , in such a way that, in particular, the entire amount of reactant passes through the laminar flow region 12 to the second end side 7 of the element 5 .
  • the adding unit 8 is provided with a nozzle 20 within a partial region 11 of the exhaust line 4 which is situated outside the diameter 14 of the exhaust line and which, in particular, is not traversed by the exhaust-gas flow 2 .
  • the partial region 11 is situated in such a way that firstly the adding unit 8 is not contaminated with or damaged by particles contained in the exhaust-gas flow 2 , and secondly a spray cone can be formed in a reproducible and determinable manner.
  • FIG. 3 shows an element 5 in the exhaust line 4 , with the exhaust-gas flow 2 flowing through the element 5 of the configuration 1 through a first end side 6 to a second end side 7 .
  • An adding unit 8 which is disposed downstream of the element 5 , sprays a spray cone 13 of a reactant 9 into the exhaust line 4 .
  • the spray cone 13 covers the area 15 of the element 5 as completely as possible.
  • droplets 17 are formed within the spray cone 13 .
  • the droplets 17 are adapted in terms of their size and speed as a function at least of the exhaust-gas speed, a spacing of wall regions of the second end side 7 from the adding unit 8 , and an angle 19 of the adding unit 8 .
  • FIG. 4 shows a configuration 1 having the element 5 with a first end side 6 and a second end side 7 .
  • the second end side 7 has a spherical construction in relation to the adding unit 8 , so as to permit as constant as possible an area loading of the second end side 7 with the reactant 9 .
  • the spray cone 13 of the adding unit 8 then merely needs to be adapted asymmetrically so as to attain as uniform as possible a surface loading of the second end side 7 of the element 5 .
  • the reactant 9 not only impinges on the outermost boundary of the second end side 7 but also makes contact at least partially with surfaces 16 of the element 5 , in such a way that the surface 16 wetted by the reactant 9 is larger than the end-side area 15 of the second end side 7 .
  • the distance 10 is defined as the spacing between the adding unit 8 and the second end side 7 , with the distance 10 being measured in the main flow direction of the exhaust-gas flow 2 in the laminar flow region 12 .
  • FIG. 5 shows a further particularly advantageous embodiment of the configuration 1 , with the element 5 having a second end side 7 which is inclined by an angle of inclination 21 and through the use of which as constant as possible an area loading of the area 15 of the element 5 can be attained with a spray cone 13 of an adding unit 8 .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Treating Waste Gases (AREA)
US13/070,650 2008-09-24 2011-03-24 Exhaust gas purification configuration and method for exhaust gas purification using a reactant Active 2030-03-23 US8484950B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102008048806A DE102008048806A1 (de) 2008-09-24 2008-09-24 Abgasreinigungsanordnung und Verfahren zur Abgasreinigung mittels eines Reaktionsmittels
DE102008048806 2008-09-24
DE102008048806.2 2008-09-24
PCT/EP2009/061543 WO2010034610A1 (de) 2008-09-24 2009-09-07 Abgasreinigungsanordnung und verfahren zur abgasreinigung mittels eines reduktionsmittels

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PCT/EP2009/061543 Continuation WO2010034610A1 (de) 2008-09-24 2009-09-07 Abgasreinigungsanordnung und verfahren zur abgasreinigung mittels eines reduktionsmittels

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US20110225952A1 US20110225952A1 (en) 2011-09-22
US8484950B2 true US8484950B2 (en) 2013-07-16

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EP (1) EP2334916B1 (es)
JP (1) JP5616344B2 (es)
KR (1) KR101295449B1 (es)
CN (1) CN102165153B (es)
DE (1) DE102008048806A1 (es)
DK (1) DK2334916T3 (es)
ES (1) ES2424455T3 (es)
PL (1) PL2334916T3 (es)
RU (1) RU2543368C2 (es)
WO (1) WO2010034610A1 (es)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
US11585253B2 (en) 2015-08-07 2023-02-21 Cummins Emission Solutions Inc. Converging liquid reductant injector nozzle in selective catalytic reduction systems

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010025880A1 (de) 2010-07-02 2012-01-05 Emitec Gesellschaft Für Emissionstechnologie Mbh Abgasbehandlungsvorrichtung
JP2013036332A (ja) * 2011-08-03 2013-02-21 Toyota Motor Corp 内燃機関の排気浄化システム
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KR20110056426A (ko) 2011-05-27
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KR101295449B1 (ko) 2013-08-09
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US20110225952A1 (en) 2011-09-22
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